Obviously, Poppy and Aggie won’t be telling each other
all their secrets, especially since Aggie’s parents have decided to keep Poppy’s gender from Aggie. Claude was a mask, or a costume, and now that Poppy’s friends only know her as Poppy, they finally know who Poppy really is and how she sees herself. Aggie’s language reflects how pervasive gender is in everyday language. They will be “rival princesses,” Aggie says, which again draws attention to gender.